W TT FPA Leipzig GmbH Testing, Inspection and Certification Authorityfor Construction Products and Construction Types

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1 W TT FPA Leipzig GmbH Testing, Inspection and Certification Authorityfor Construction Products and Construction Types Leipzig Institute for Materials Research and Testing Business Division III - Dipl. -lng. Sebastian Hauswaldt Work Group Fire Behaviour of Building Components and speclal Constructions Dipl.-Wirtsch.-lng. S. Krämer Tel. :+9 (0) s. kramer@mfpa-leipzig. de Advisory Opinion No. GS 3.2/ No. Copy1 Subject matterdient: Date of order: Person in Charge: Validity: Index MTH Fire protection assessment of the characteristic steel strength under tensile load according to EAD "Mechanical fasteners for use in concrete" (October2016). INDEX Fixing Systems Tecnicas Expansivas S. L. Segador Logrono (La Rioja) - SPAIN 15. December2016 Dipl.-Wirtsch.-lng. S. Krämer 26. January 2022 This advisory opinion consists of 3 pages oftext and 2 Enclosures. This document may only be reproduced in its unabbreviated fonm. All publication, even in excerpts, requires the prior written permission of MFPA Leipzig GmbH. The legal binding form is the written German form with the original signatures and original stamp of the authorized signatory / signatories. General terms and conditions of MFPA Leipzig GmbH are valid. Gesellschaft für Materialforschung und Prüfungsanstalt für das Bauwesen Leipzig mbh (MFPA Leipzig GmbH) Head Office: Hans-Weigel-Str. 2b Leipzig/Germany Managing Director Prof. Dr. -lng. Frank Dehn Comm. Register VAT-ID: ' Local Court Leipzig HRB DE Tel. : +9 (0) Fax: +9(0)

2 BJIFM MFPA Leipzig GmbH Page 2 of 3 1 Objective and request MFPA Leipzig GmbH was commissioned on 15. December 2016 by INDEX Fixing Systems to prepare an advisory opinion on the Index MTH with a one-side exposure to fire and anchoring in a reinforced concrete surface in order to detennine the characteristic values for stressing under centric tension load. 2 Description of the tested construction The Index MTH is a torque controlled expansion anchor of electrogalvanized steel or stainless steel ofthe sizes M6 to M20. The Index MTH is anchored by torque-controlled expansion after been placed in a drilled hole in uncracked concrete. The System should be used under static or quasi-static loading in reinforced or unreinforced normal concrete of strength class ä C 20/25 and ä C /60 in accordance with DIN EN 206: [1]. No further description of the anchor will be provided here and reference is made to the ETA-05/022 [2]. The present tests of Index MTH where performed in the sizes M8 and M12 in eletrogalvanised steel ofthe strength class The details of how the test was performed and the individual test results are described in the test report PB 3. 2/ [3]. 3 Test evaluation and conclusions The test evaluation for steel failure was carried out according to EAD : []. A graphical analysis ofthe test results is given in Enclosure 2. To determine the characteristic tension stress the values for M8 and M12 were interpreted based on the test results. The values for M10 result from the interpolation of the values for M8 and M12 based on the steel cross section. For anchors > M12 the tension ofthe cross section size M12 was used. On this basis, the following characteristic values for stressing under centric tension can be given for the Index MTH (Table 1). To design also the characteristic steel stress under normal temperature have to be considered, the smaller stress is decisive. Determination of the characteristic values for other types of failure (e. g. "pull-out" and "concrete cone failure") was not object of the test; they can be determined according to the simplified verification method of TR 020: [5] or by experiments according to the method described in the TR 020: [5]. Table 1 Characteristic tensile loading of the Index MTH (electrogalvanised, strength class ä 5. 8) ixmth M6 M8 M10 M12 M1 M16 M20 Min embedment depth hnonn min 60min 90min NRk,s,fi(30) NRk,s,fi(60) NRk, s,fi(90) min NRk, s,fi(120) Lei^G^I^ ^. C 02 -^8~ 0800

3 CT MFPA Leipzig GmbH Page 3 of 3 Special notes The assessment above applies for the Index MTH, when installed in accordance with the installation regulations of the firm of INDEX Fixing Systems or a general building inspectorate approval or European Technical Assessment. The assessment further applies only for anchors of electrogalvanised steel from strength classes ä 5. 8 in uncracked reinforced concrete. On account ofthe better high-temperature behaviourthe results also apply for stainless steel A. The assessment applies in general to a one-sided fire loading ofthe structural elements. In the event of a fire loading on several sides, the verification procedure can only be applied ifthe distance to the outer edge of the anchor is c ä 300 mm und ä 2 hef beträgt. Based on this the quoted loads also apply to lateral tension and/or diagonal tension. The assessment only applies in combination with reinforced concrete ceilings of strength class ä C 20/25 and s C /60 according to DIN EN 206: [1], that can be classified in at least the fire-resistance class corresponding to that ofthe anchors. In addition, the notes contained in DIN EN : [6] (see section. 5) on the avoidance of concrete spalling also apply. According to this, the moisture content must be less than three (or four according to the National Annex) -% by weight. This document does not replace a certificate of conformity or suitability according to national and European building codes. Leipzig, 27 January 2017 zig umbri ^ l SAG 02. NO Dipl Ing. S. Hauswalä^" ~' Hea of Business Division '*^<~, Di - M. Juknat Hea oflaboratory Dipl.-Wirtsch.-lng. S. Krämer Testing Engineer List of Enclosures Enclosure 1 Installation Parameters of Index MTH Enclosure 2 Graphical analysis of the test results according to TR 020: [] Belonging documents [1] DIN EN 206: Concrete - Specification. performance, production and conformity [2] European Technical Assessment ETA-05/022 Trade name: Anchor MTH; product family: Torque controlled expansion anchor made of galvanised steel or stainless steel of sizes M6, M8, MIO, M12, M1, M16 and M20 foruse in non-cracked concrete, letcc: 7. December 2016 [3] Test report PB 3. 2/ Test according to EAD to determine the characteristic steel strength under tensile load ad under thermal exposure, MFPA Leipzig GmbH: 27. January 2017, INDEX Fixing Systems [] EAD : Mechanical fasteners for use in concrete [5] TR 020: Evaluation ofanchorages in Concrete conceming Resistance to Fire [6] DIN EN : Eurocode 2: Design ofconcrete structures - Part 1-2: General rules - Structural fire design

4 MFPA Leipzig GmbH Enclosure 1 Page 1 of 2 Enclosure 1 Installation parameters of Index MTH sw < inst "T -de 'nom A. hi <. lfix 'min MTH: galvanized anchor Installation Parameters do df Tinst Nominal diameter of drill bit: Fixture clearance hole diameter: Nominal Installation torque: Standard embedment depth Lmin.max Total lengthofthebolt: [Nrn] M6 M8 M10 N12 M1 M16 M hmin hi Minimum thickness ofconcrete member: Depthofdrilledhole: hnom Overall anchor embed depth in concrete: 9,5 59,5 66, ,5 125 hef. std Effective anchorage depth: tflx Thickness of fixture for DI N 125 washer** L-58 L- L-80 L-92 L-108 L-122 L-1' tfix Smln Cmin Thickness of fixture for DIN 9021 and 0 washers** Minimum allowable spacing: Minimum allowable distance: L-58 L-71 L-80 L-9 /. \ L-108 L-12 ^ J10 &-31 einzig GmüH, KBUi^r &uc~.0800 L-1! '^

5 MFPA Leipzig GmbH Enclosure 1 Page 2 of 2 MTH: galvanized anchor Installation parameters M6 M8 M10 M12 M1 M16 M20 do df Tinst Nominal diameter of drill bit: Fixture clearance hole diameter: Nominal Installation torque: [Nrn] Reduced embedment depth Lmln Lmax Total lengthofthebolt: hmln hi hnom hef. red tfix Smln Cmin Minimum thickness ofconcrete member: Depth of drilled hole: Overall anchor embed depth in concrete: Effective anchorage depth: Thickness of fixture: Minimum allowable spacing: Minimum allowable distance: 6,5 35* L ,5 2 L-67 *Use restricted to anchoring ofstructural components which are statically indeterminate **L = total anchor length 62 L-77 Provided by the dient. SAG 02 NB' ÖS

6 FP^ MFPA Leipzig GmbH l"""""1"1 'n Enclosure 2 Page 1 of1 Enclosure 2 Graphical analysis ofthe test results according to TR 020: [5] Diagram A2. 1 1,60 1,0 1, 20 Graphical analysis of the anchor MTH size M8. Measured values --Regression curve --Extrapolation line A F,fi(30) 1, 00 i.c 0, 80 1" -10, 60 1, 09 ^. 0, 80 0, 66 0, 0 0, 52 0, 20 0, Fire resistance time in minutes Diagram A2.2 5, 00,, 00 3, Z ^.c 2, i. ^2, 00 1, 1, 00 0, Graphical analysis of the anchor MTH size M 12 3,36, 2, 2 1, 95 1,7. Measured values -Regression curve --Extrapolation line A F,fi(30) 0, " Fire resistance time in minutes Leipzig Smb "t ^